Counter hierarchy
=================
Service unique name
Interface net.connman.Counter
Object path freely definable
Methods void Release()
This method gets called when the service daemon
unregisters the counter. A counter can use it to do
cleanup tasks. There is no need to unregister the
counter, because when this method gets called it has
already been unregistered.
void Usage(object service, dict home, dict roaming)
This signal indicates a change in the counter values
for the service object. The counter is reset by calling
the service ResetCounters method.
When registering a new counter this method will be
called once with all details for "home" and "roaming"
counters filled in. Every further method call will
only include the changed values.
When "home" counter is active, then "roaming" counter
will contain an empty dictionary and vise-versa.
The dictionary argument contains the following entries:
RX.Packets
Total number of packets received.
TX.Bytes
Total number of packets sent.
RX.Bytes
Total number of bytes received.
TX.Bytes
Total number of bytes sent.
RX.Errors
Total number of erronous packets
received.
TX.Errors
Total number of erronous packets
sent.
RX.Dropped
Total number of dropped packets
while receiving.
TX.Dropped
Total number of dropped packets
while sending.
Time
Total number of seconds online.
